Measurement Technique for Reciprocal Five-port Devices
碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 100 === This thesis presents a measurement technique for reciprocal five-port devices. The technique employs four-port vector network analyzers to conduct required measurements. The reflection from the unmeasured port terminated with a non-ideal 50Ω termination is ta...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/94f3t6 |
| Summary: | 碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 100 === This thesis presents a measurement technique for reciprocal five-port devices. The technique employs four-port vector network analyzers to conduct required measurements. The reflection from the unmeasured port terminated with a non-ideal 50Ω termination is taken into account. The calibration equations for measuring the scattering parameters of full-symmetric and semi-symmetric five-port devices are developed. Theoretical analysis and formula derivation are presented in this thesis. The accuracy of the proposed technique is verified through a simulation tool first. Then the calibrated results of the design examples for full-symmetric and semi-symmetric devices are compared with the frequency responses from a commercial EM simulator. The comparison shows a good agreement. Further error analysis shows the inherent errors introduced by measurement instruments are not deteriorated by the calibration equations. The measurement technique herewith is proved to be useful for measuring five-port devices using four-port vector network analyzer.
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